As the title says...do I have to choose to port my number when activating a new sim card, or can I do it anytime. I want to make sure the service works fine for me before getting into porting my number. I would like to give it 30 days on the Straight Talk issued number, and then port my number after I confirm that everything is a-ok. Is this possible, or can I only port at the time I activate a new sim?

Obviously I could just order a new sim card if the answer is no, but I'd like to save the $15 bucks if possible.